ENG 203:SYSTEM ARCHITECTURE01/20/124Operational and Logical ViewsJohn M. Borky 2009 - all rights reserved•OV – ensure time-sensitive requirements are captured:−Rigorous analysis and documentation/modeling of all system behaviors, especially time-sensitive; likely to involve more use of Sequence and State Machine Diagrams than in non-RT architectures−Analysis and refinement of a requirements baseline, including quantitative RT requirements; careful mapping to Use Cases and Threads−Interfaces to external systems and resources, attention to time-sensitive aspects−Interfaces between RT and non-RT domains•LV – reflect time-sensitivity in design:−Flow down RT requirements to Structural and Behavioral Diagrams−Timing analysis; likely to require close coordination with executable architecture modeling and simulation−Key design decisions such as infrastructure layering, scheduling policy, interconnect topology and protocol(s), and use of RT SOA−Careful functional design of interfaces, including timing constraints

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